1. Ace Manufacturing and Parts Co.
2. Advanced Clutch Technology Inc.
3. Australian Clutch Services Pty. Ltd.
4. Black Magic Clutche
5. Brembo S.p.A.
6. C U Custom Clutch Corp.
7. Clutch Masters Industries Inc.
8. Competition Clutch Inc.
9. EXEDY Corp.
10. Helix Autosport Ltd.
11. Holley Performance Products Inc.
12. Klaus Reinicke GmbH
13. OS Giken USA
14. Schaeffler Automotive Aftermarket GmbH & Co. KG
15. SPEC Clutch Inc.